Field-coil support.



PATENTED DEC. 10, 1907.

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OIL SU RT.

FIELD G APPLIQATIOR PATBNTED DEC. 10, 1907.

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8EPT.30,1904

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HELD COIL s APPLICATION IIIZED Inventor.- E'dwanl Tfl B Attorney EDWARD 'r. MUG, or nonwooo,

OHIO, ASSIGNOR T not BULLOCK ELECTRIC MANUFACTURING COMPANY,

A CORPORATION OF OHIO.

FIELD-COIL SUPPORT.

Specification of Letters Patent.

Patented Dec, 10, 1907.

Application filed Qeptomber 30, 1904. Serial No. il26.674.

To all whom it may concern:

Be it known that I, EDWARD T. Moo,

citizen of the United States, residing at N orwood, in the county of Hamilton and'State of Ohio, have invented certain new and use- Improvements which the following is a full, clear, and exact specification.

support for said coi My present invention relates to dynamoelectric machines and particular] to the means for supporting the field coi in such machines. I

In dynamo-electric machines, particularly machines of the revolving field type it is essential that the parts be rigidly and firmly held in place when first assembled and also after the machine has been in operation for some time. It is also desirable that each pole iece and field coil surrounding same may handled as a single unit when the field magnet is being assembled or taken apart. a

The object of my invention is to so arrange each field coil and pole piece of the field magnet that the coil will be held in place on the pole piece r 1088 of whether the pole piece is in position on the field in ct structure or removed therefrom, anda rther object is to mount the pole 'piece and its coil on the frame of the machine or field' magnet structure so that the coil will be held firmly in place thereon and will be revented from wor g loose when the mac no is in operation. Q v

My invention in one of its aspects consists of the combination of a frame, such as the core of the rotatable member of a dynamoelectric machine, a ventilating plate mounted in said frame, a pole piece secured to said frame, a coil on the ole piece and a resilient mounted on said ventilatmg plate. y

In another of its aspects, my invention consists of a separable pole piece for a dynamo-electric machine, a coll on said pole piece and means for yieldingly retaining said coil in position on saidpole piece whether the latter 1s in the machine or removed there- My invention also comprises improve in Field-Coil Supports, of

In the accompanying drawings which illustrate the preferred embodiment tion, Figure 1 represents volving field ma net ,with y and in section: ig, 2 is-a composite longitudinal sectional view of the magnet shown in Fig. 1, the right hand half of said figure 'bein on the line 2 -2, Fig. 3, and the left han half being a section through the center of the pole piece on the line 2-2, Fig. 3

a side View of a re parts broken awa'v 3 1s a sectional viewon the line 3--3 oi Fig 2. vI he shaft upon which the revol field mafiiet is mounted is indicated at4. n the she is keyed a spiderhaving a hub.5 and projecting arms 6. wise fastened to the outer ends of the arms of said spider is a rim or core built up of the laminae 7 clamped by means of the bolts 8 and nuts 9 between the annular end plates 10. The laminae are divided into sections separated by the ventilating plates 11 of the construction and contour clearly shown in F' 2 and 3, Each ventilating plate is provi ed with a web 11 lugs or projections 11R end plates 10 by the segmental cover plates 13. r

Attached to the annular corein any desired manner are vided with projecting portions 15 at t eir outer ends and having mounted thereon coils 16. The pole pieces are preferably made up of assembled lamime clamped between the end plates 18 of said pole pieces by means of the bolts 17. These laminae and end plates 18 as illustrated in the accompanying drawings are provided with dove-tailed projections 19 which enter dove-tailed grooves 20 in the annular core. Surrounding the pole piece 14 at the bottom of the coil 16 is a rigid continuous ring 21, which assists the coil 16 in its proper shape. The coils are here shown as made from flat cop er strips edgewise Wound, but they may be ormed of wire, or in any other desired manner.

Bea-ring against the bottom of the end turns of the coil surrounding each pole piece and preferably, as shown, bearing against the continuous ring 21, are resilient supports such as springs 22 held in ositionon the pole piece in such a manner t and coil ma be removed and handle Fastened to the from the machine of my invens.

Dove-tailed or otherwith spacing'ribs,

means of the screws 12 are in retaining at said pole piece as a single unit. For the pur-" the pole' pieces 14, each ropose of holding said springs 22 in position on ,-'-the pole piece, Igprefer to employ a removable frame 23' screwed or otherwise fastened to-the end plates 18at25i. This spring supportingframe 23 is preferablyfastened to the dove-tailedprojection of the polepieee. and is provided With means such as a pin 25 for the" purpose of guiding said spring 22. For the purpose of resiliently supporting the sides of the coils ldwithout interfering with the laminae of the core, I mount-upoir-t'he ventilating plates or segments 1-1, supporting springs 26 .which are held in position and guided bymeans of the pins lugs or pr nted? tions,.27. The pins are formed on a deare similarly protected against injury by the segmental cover plates 13. The continuous ring 21 is preferably provided with slight recesses 28, which receive the outer ends of the supporting springs 22 and 26, said springs thus'forining a resilient seat for the coil.

The current is led to the coils of the rotat-' ing member through the conductors 30,whieh are electrically connected with the collector rings 31 mounted on the shaft 4, the eonnec-' I Patent is tions between adjacent coils being made at 32, Fig. 1.

as applied to a rotating field magnet structure it will be readily understood that it may. be employed in connection with a fixed fieldmagnet. structure and subjected. to many modifications andchanges without departing from its spirit and scope. I aim in theappended claims to cover all such changes and modifications. 3 Having thus described myinvention, what I claim as new and desire to secure by Letters 1. In a dynamo-electric machine, the combination of a frame, a ventilating plate in 60.

said frame, a pole piece secured to said frame, a coil on said pole piece, and a resilient support for said coil mounted on said ventilating plate." v

2. In a dynamo-clectric machine, the combination of a frame, a ventilating plate in said framigapole piece secured to said frame, said pole piece having projecting portions, a coil on said pole :piece, and a spring or springsunonnted on. said ventilating plate for forcing said coil against the projecting portions of said pole piece to holdthe coil in position on the pole'piece;

3. in a dynamo-electric machine, the comhination of a frame, comprising laminae clamped between end plates, ventilating I 'piecesfastenedtosai Althou h I have illustrated my invention plates in said frame, a pole piece fastened to said frame, a (fiOll Oll said pole piece, springs onsaid ventilating plate supporting the sides of said coil, and springs on the. supporting the ends of the coil.

4. In adynamo-electric maehine,the com bination of a frame, comprising laminae clamped betweenend plates, ventilating plates in said frame, a pole piece fastened to said frame, a coil on said pole piece, springs on'said ventilating plate supporting the sides of said coil, springs on the pole piece for supporting the ends of the coil, and guides on the xentilating plates and pole piece for holding saidspri-ngsinposition. I

5. In a dynamo-eleetricanachine,thecom:.. bination of a frame, ventilating plate's'in'said frame, apole piece secured to said frame, a coil on said pole piece, and a resilient seat for said coil, comprising compressionsprings carried bysaid ipoletpiec'eand said ventilating plates. i

6. In a dynamo electricmaehine', the comhinationof a frame, ventilating plates in said frame, apole piece secured to said frame, a coil on said pole piece, and a resilient-seat'for said cell, comprising compression springs carpole piece for i. l. v

ried. by said'pole pieceninl-fsaid ventilatingplates, and neans on said pole piece and said ventilating plates acting as guides andsupports for saidsprings. i i a 7. In a dynamo-electric machine,fa rotatable field magnet, comprising a :laminated core, ventilatingplates insaid cofre,w pole3 p, re coils on said pole pieces, and compression springs mounted on said, ventilating plates for supporting said coils; I

sald springs "carr ed" y chine, said pole piece having projecting por- I 8; In adynamdelectnc machine, a rotatas." I

the end turns of the coil, andsuppprts for p piece the coil is held in roper position when the pole iece is on t e machine or removed there rom.

.12. As an article of manufacture, a separable pole. iece for a dynam0-electric niachi pse, a coi on said pole piece, springs on the en of the pole iece to retain and support the and turns 0? frames for said spring? fastened to said pole 13. As article of manufacture, a separable pole ieoe for a dynamo-electric ma ends of the pole piece 16 for saidsprmgs' and guiding chine, a coi pole piece, springs on the to retain and support the end turns of the coil, supportin frames fastened to said p0 e piece,

ms in said supporting frames for holding Blld sp s in position.

14. Asan'articlo o manufacture, a sepathe",'c0il, and supportings tantially the plane 0 i rable pole iece for a dynamo-electric mach ne, a cor thereon, a dove-tailed PTOjOCtlOn on the pole piece, and resilient means on said tilating plate having spacing ribs or projections, and one or more pins or projections of less width than the spacing ribs or projections, said last named pins or projections extending from one edge of the plate in subthe plate. In testimony whereof I afiix my signature, in the presence of two witnesses.

EDWARD T. MUG. v Witnesses:

FRED J. KINBEY, SANFORD KLEIN. 

